Mounting for electrodes with cooled metallic head



C. SCHRAEPLER.

MOUNTING FOR ELECTRODES WITH COOLED METALLIC HEADS.

APPLICATION FILED MAR. 25,19I4.

1 ,408f106, Patented Feb. 28, 1922.

II II III IIIIIIIII IIIIIII' II I I UNITED STATES PATENT OFFICE.-

CUR! SCHRAEPLER, OI ESSEN-ON -'1HE-RUHR, GERMANY, ASSIGNOB T0 FRIED.KRUPP AKTIENGISELLSCHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.

MOUNTING FOR- ELECTRODES WITH COOLE'D METAILIC HEAD.

Specification of Letters Patent.

Patented Feb. 28, 1922.

Application filed March 25, 1914. Serial No. 827,209.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 8, 1921, 41 STAT. In;1313.)

To all whom it may concern:

Be it known that I, CURT SCHRAEPLER, residing at Essen-on-the-Ruhr,Germany, a subject of the Emperor of Germany, ave invented a certain newand useful Improvement in Mountings for Electrodes wlth Cooled MetallicHeads, of which the followin is a specification.

Theinvention relates to metalhc mountings for electrodes, with cooledmetallic heads, to be suspended over the melting baths of electricfurnaces, and has for its objects toattain, with such electrodes, firstan easy replaceability, without detracting from the value andreliability of the circuitclosure between the mounting and the head .ofthe electrode, and second, to render it possible to protect fromunpermissible heat, the electrode-mounting that contains the conductor.These purposes are attained, according to the invention, by providingthe electrode with a metallic, cooled head and by having both themetallic electrodehead and the appurtenant metallic electrodemounting,provided with corresponding conical carrying surfaces, so that upon thesuspension of the electrode-head from above,

, loaded with the electrode, the effect of the weight of the electrodewill be to enforce such an intimate contact between these parts thatfrom this condition alone, a safe and good conductivity is insuredbetween the electrode head and the electrode mounting to which theconductor is connected.

The accompanying drawing is a longitudinal sectional view showing anillustrative embodiment of the subject of the invention.

The electrode consists of a carbon cylinder A and a metallic head B,which is connected with the cylinder through means of the tap b andarranged in a known manner for the reception of a cooling fluid E. Whenin use, the electrode rests under its own weight with its metallic headB, which is provided with a conical bearing surface 21 in acorrespondingly formed metallic mountin C, which is fixed on the, end ofan arm D, w ich arm is intended to be adjustable up and and theelectrode head B, anumber of screw bolts 0 are employed, which arejointed to the mounting C in the manner shown in the drawing.

. Under the action of the inherent wei ht of the electrode a highpressure exists between the electrode head B and the mounting C upon theconical bearing surfaces 6 which is found in practice to insure athoroughl reliable and practicable circuit closure. i Vhen the electrodeis required to be raised from its bearing for the purpose of replacingthe carbon cylinder, it is only necessary to release the connectionestablished by the bolts 0 in order to permit raising of the electrode.

I claim 1. A metallic mounting for a vertically arranged electrode,designed for electrical furnace purposes, said electrode being providedwith a cooled metallic head, saidmetallic head being supported by saidmounting and being adapted to support the weight of the electrode; saidmounting and head being constructed with corresponding conical bearingsurfaces to insure intimate electrical contact by means of the weight ofthe electrode solely.

2. A metallic mounting for a vertically arranged electrode, designed forelectrical furnace purposes, said electrode being provided with a cooledmetallic'head, said metallic head being supported by said mounting andbeing adapted to support the weight of the electrode; said mounting andhead being constructed with corresponding conical bearing surfaces toinsure intimate electrical contact by means of the weight of theelectrode solely; and means connected to said head and mounting forsecuring the mechanical and electrical connection between said parts;said means comprisin screw bolts jointed to one of said parts andengaging in recessesof the other part.

The foregoing specification si ned at Barmen,: Germany, this 4th day ofMarch, 1914.

CURT SCHRAEPLER. [1 s.]

